<?php
/**
 * 2007-2017 PrestaShop
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * https://opensource.org/licenses/OSL-3.0
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@prestashop.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
 * versions in the future. If you wish to customize PrestaShop for your
 * needs please refer to http://www.prestashop.com for more information.
 *
 * @author    PrestaShop SA <contact@prestashop.com>
 * @copyright 2007-2017 PrestaShop SA
 * @license   https://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
 * International Registered Trademark & Property of PrestaShop SA
 */

/**
 * Class CMSCore
 */
class CMSCore extends ObjectModel
{
    /** @var string Name */
    public $id;
    public $id_cms;
    public $meta_title;
    public $meta_description;
    public $meta_keywords;
    public $content;
    public $link_rewrite;
    public $id_cms_category;
    public $position;
    public $indexation;
    public $active;

    /**
     * @see ObjectModel::$definition
     */
    public static $definition = array(
        'table' => 'cms',
        'primary' => 'id_cms',
        'multilang' => true,
        'multilang_shop' => true,
        'fields' => array(
            'id_cms_category' =>    array('type' => self::TYPE_INT, 'validate' => 'isUnsignedInt'),
            'position' =>            array('type' => self::TYPE_INT),
            'indexation' =>         array('type' => self::TYPE_BOOL),
            'active' =>            array('type' => self::TYPE_BOOL),

            /* Lang fields */
            'meta_description' =>    array('type' => self::TYPE_STRING, 'lang' => true, 'validate' => 'isGenericName', 'size' => 255),
            'meta_keywords' =>        array('type' => self::TYPE_STRING, 'lang' => true, 'validate' => 'isGenericName', 'size' => 255),
            'meta_title' =>            array('type' => self::TYPE_STRING, 'lang' => true, 'validate' => 'isGenericName', 'required' => true, 'size' => 128),
            'link_rewrite' =>        array('type' => self::TYPE_STRING, 'lang' => true, 'validate' => 'isLinkRewrite', 'required' => true, 'size' => 128),
            'content' =>            array('type' => self::TYPE_HTML, 'lang' => true, 'validate' => 'isCleanHtml', 'size' => 3999999999999),
        ),
    );

    protected $webserviceParameters = array(
        'objectNodeName' => 'content',
        'objectsNodeName' => 'content_management_system',
    );

    /**
     * Adds current CMS as a new Object to the database
     *
     * @param bool $autoDate    Automatically set `date_upd` and `date_add` columns
     * @param bool $nullValues Whether we want to use NULL values instead of empty quotes values
     *
     * @return bool Indicates whether the CMS has been successfully added
     * @throws PrestaShopDatabaseException
     * @throws PrestaShopException
     */
    public function add($autoDate = true, $nullValues = false)
    {
        $this->position = CMS::getLastPosition((int) $this->id_cms_category);
        return parent::add($autoDate, true);
    }

    /**
     * Updates the current CMS in the database
     *
     * @param bool $nullValues Whether we want to use NULL values instead of empty quotes values
     *
     * @return bool Indicates whether the CMS has been successfully updated
     * @throws PrestaShopDatabaseException
     * @throws PrestaShopException
     */
    public function update($nullValues = false)
    {
        if (parent::update($nullValues)) {
            return $this->cleanPositions($this->id_cms_category);
        }

        return false;
    }

    /**
     * Deletes current CMS from the database
     *
     * @return bool True if delete was successful
     * @throws PrestaShopException
     */
    public function delete()
    {
        if (parent::delete()) {
            return $this->cleanPositions($this->id_cms_category);
        }

        return false;
    }

    /**
     * Get links
     *
     * @param int       $idLang Language ID
     * @param null      $selection
     * @param bool      $active
     * @param Link|null $link
     *
     * @return array
     */
    public static function getLinks($idLang, $selection = null, $active = true, Link $link = null)
    {
        if (!$link) {
            $link = Context::getContext()->link;
        }
        $result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
		SELECT c.id_cms, cl.link_rewrite, cl.meta_title
		FROM '._DB_PREFIX_.'cms c
		LEFT JOIN '._DB_PREFIX_.'cms_lang cl ON (c.id_cms = cl.id_cms AND cl.id_lang = '.(int) $idLang.')
		'.Shop::addSqlAssociation('cms', 'c').'
		WHERE 1
		'.(($selection !== null) ? ' AND c.id_cms IN ('.implode(',', array_map('intval', $selection)).')' : '').
        ($active ? ' AND c.`active` = 1 ' : '').
        'GROUP BY c.id_cms
		ORDER BY c.`position`');

        $links = array();
        if ($result) {
            foreach ($result as $row) {
                $row['link'] = $link->getCMSLink((int) $row['id_cms'], $row['link_rewrite']);
                $links[] = $row;
            }
        }

        return $links;
    }

    /**
     * @param null $idLang
     * @param bool $idBlock
     * @param bool $active
     *
     * @return array|false|mysqli_result|null|PDOStatement|resource
     */
    public static function listCms($idLang = null, $idBlock = false, $active = true)
    {
        if (empty($idLang)) {
            $idLang = (int) Configuration::get('PS_LANG_DEFAULT');
        }

        return Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
		SELECT c.id_cms, l.meta_title
		FROM  '._DB_PREFIX_.'cms c
		JOIN '._DB_PREFIX_.'cms_lang l ON (c.id_cms = l.id_cms)
		'.Shop::addSqlAssociation('cms', 'c').'
		'.(($idBlock) ? 'JOIN '._DB_PREFIX_.'block_cms b ON (c.id_cms = b.id_cms)' : '').'
		WHERE l.id_lang = '.(int) $idLang.(($idBlock) ? ' AND b.id_block = '.(int) $idBlock : '').($active ? ' AND c.`active` = 1 ' : '').'
		GROUP BY c.id_cms
		ORDER BY c.`position`');
    }

    /**
     * @param $way
     * @param $position
     *
     * @return bool
     */
    public function updatePosition($way, $position)
    {
        if (!$res = Db::getInstance()->executeS('
			SELECT cp.`id_cms`, cp.`position`, cp.`id_cms_category`
			FROM `'._DB_PREFIX_.'cms` cp
			WHERE cp.`id_cms_category` = '.(int) $this->id_cms_category.'
			ORDER BY cp.`position` ASC'
        )) {
            return false;
        }

        foreach ($res as $cms) {
            if ((int) $cms['id_cms'] == (int) $this->id) {
                $movedCms = $cms;
            }
        }

        if (!isset($movedCms) || !isset($position)) {
            return false;
        }

        // < and > statements rather than BETWEEN operator
        // since BETWEEN is treated differently according to databases
        return (Db::getInstance()->execute('
			UPDATE `'._DB_PREFIX_.'cms`
			SET `position`= `position` '.($way ? '- 1' : '+ 1').'
			WHERE `position`
			'.($way
                ? '> '.(int) $movedCms['position'].' AND `position` <= '.(int) $position
                : '< '.(int) $movedCms['position'].' AND `position` >= '.(int) $position).'
			AND `id_cms_category`='.(int) $movedCms['id_cms_category'])
        && Db::getInstance()->execute('
			UPDATE `'._DB_PREFIX_.'cms`
			SET `position` = '.(int) $position.'
			WHERE `id_cms` = '.(int) $movedCms['id_cms'].'
			AND `id_cms_category`='.(int) $movedCms['id_cms_category']));
    }

    /**
     * @param $idCategory
     *
     * @return bool
     */
    public static function cleanPositions($idCategory)
    {
        $sql = '
		SELECT `id_cms`
		FROM `'._DB_PREFIX_.'cms`
		WHERE `id_cms_category` = '.(int) $idCategory.'
		ORDER BY `position`';

        $result = Db::getInstance()->executeS($sql);

        for ($i = 0, $total = count($result); $i < $total; ++$i) {
            $sql = 'UPDATE `'._DB_PREFIX_.'cms`
					SET `position` = '.(int) $i.'
					WHERE `id_cms_category` = '.(int) $idCategory.'
						AND `id_cms` = '.(int) $result[$i]['id_cms'];
            Db::getInstance()->execute($sql);
        }

        return true;
    }

    /**
     * @param $idCategory
     *
     * @return false|null|string
     */
    public static function getLastPosition($idCategory)
    {
        $sql = '
		SELECT MAX(position) + 1
		FROM `'._DB_PREFIX_.'cms`
		WHERE `id_cms_category` = '.(int) $idCategory;

        return (Db::getInstance()->getValue($sql));
    }

    /**
     * @param null $idLang
     * @param null $idCmsCategory
     * @param bool $active
     * @param null $idShop
     *
     * @return array|false|mysqli_result|null|PDOStatement|resource
     */
    public static function getCMSPages($idLang = null, $idCmsCategory = null, $active = true, $idShop = null)
    {
        $sql = new DbQuery();
        $sql->select('*');
        $sql->from('cms', 'c');

        if ($idLang) {
            if ($idShop) {
                $sql->innerJoin('cms_lang', 'l', 'c.id_cms = l.id_cms AND l.id_lang = '.(int) $idLang.' AND l.id_shop = '.(int) $idShop);
            } else {
                $sql->innerJoin('cms_lang', 'l', 'c.id_cms = l.id_cms AND l.id_lang = '.(int) $idLang);
            }
        }

        if ($idShop) {
            $sql->innerJoin('cms_shop', 'cs', 'c.id_cms = cs.id_cms AND cs.id_shop = '.(int) $idShop);
        }

        if ($active) {
            $sql->where('c.active = 1');
        }

        if ($idCmsCategory) {
            $sql->where('c.id_cms_category = '.(int) $idCmsCategory);
        }

        $sql->orderBy('position');

        return Db::getInstance()->executeS($sql);
    }

    /**
     * @param $idCms
     *
     * @return array|false|mysqli_result|null|PDOStatement|resource
     */
    public static function getUrlRewriteInformations($idCms)
    {
        $sql = 'SELECT l.`id_lang`, c.`link_rewrite`
				FROM `'._DB_PREFIX_.'cms_lang` AS c
				LEFT JOIN  `'._DB_PREFIX_.'lang` AS l ON c.`id_lang` = l.`id_lang`
				WHERE c.`id_cms` = '.(int) $idCms.'
				AND l.`active` = 1';

        return Db::getInstance()->executeS($sql);
    }

    /**
     * @param int      $idCms
     * @param int|null $idLang
     * @param int|null $idShop
     *
     * @return array|bool|null|object
     */
    public static function getCMSContent($idCms, $idLang = null, $idShop = null)
    {
        if (is_null($idLang)) {
            $idLang = (int) Configuration::get('PS_LANG_DEFAULT');
        }
        if (is_null($idShop)) {
            $idShop = (int) Configuration::get('PS_SHOP_DEFAULT');
        }

        $sql = '
			SELECT `content`
			FROM `'._DB_PREFIX_.'cms_lang`
			WHERE `id_cms` = '.(int) $idCms.' AND `id_lang` = '.(int) $idLang.' AND `id_shop` = '.(int) $idShop;

        return Db::getInstance()->getRow($sql);
    }

    /**
     * Method required for new PrestaShop Core
     *
     * @return string
     *
     * @since 1.7.0
     */
    public static function getRepositoryClassName()
    {
        return '\\PrestaShop\\PrestaShop\\Core\\CMS\\CMSRepository';
    }
}
